This paper analyses the time dependency as well as industry differences of the drivers of customer satisfaction and customer loyalty in the EPSI rating framework. The analysis is carried out on data from Danish mobile phone companies, banks and supermarkets from 2000 to 2002. The analyses indicated that the model structure of the EPSI Rating framework is stable across industries as well as stable across time with respect to the overall effects on customer loyalty. The analyses furthermore revealed that there is an increasing effect of image on customer satisfaction over the three year time span and that service quality is more important for banks than for supermarkets. Finally the overall effect of expectation turned out to be insignificant.
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Eskildsen et al. (2004) studied this question.
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